本文实例讲述了PHP基于pdo的数据库操作类。分享给大家供大家参考,具体如下:
工作中需要操作sqlserver、oracle都是使用的这个类,当时是在别人的基础上改进了,现在分享下
<?phpclass Pdodb{ protected $pdo; protected $res; protected $config; /*构造函数*/ function __construct($config){ $this->Config = $config; $this->connect(); } /*数据库连接*/ public function connect(){ try { $this->pdo= new PDO($this->Config["dsn"], $this->Config["username"], $this->Config["password"]);//$dbh = new PDO("mysql:host=localhost;dbname=test", $user, $pass); $this->pdo->query("set names utf8"); }catch(Exception $e){ echo "数据库连接失败,详情: " . $e->getMessage () . " 请在配置文件中数据库连接信息"; exit (); } /* if($this->Config["type"]=="oracle"){ $this->pdo->query("set names {$this->Config["charset"]};"); }else{ $this->pdo->query("set names {$this->Config["charset"]};"); } */ //把结果序列化成stdClass //$this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ); //自己写代码捕获Exception //$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);//属性名 属性值 数组以关联数组返回 } /*数据库关闭*/ public function close(){ $this->pdo = null; } //用于有记录结果返回的操作,特别是SELECT操作 public function query($sql,$return=false){ $res = $this->pdo->query($sql); if($res){ $this->res = $res; // 未返回 return $this->res; } if($return){ return $res; } } //主要是针对没有结果集合返回的操作,比如INSERT、UPDATE、DELETE等操作 public function exec($sql,$return=false){ $res = $this->pdo->exec($sql); if($res){ $this->res = $res; } if($return){//返回操作是否成功 成功返回1 失败0 return $res; } } //将$this->res以数组返回(全部返回) public function fetchAll(){ return $this->res->fetchAll(); } //将$this->res以数组返回(一条记录) public function fetch(){ return $this->res->fetch(); } //返回所有字段 public function fetchColumn(){ return $this->res->fetchColumn(); } //返回最后插入的id public function lastInsertId(){ return $this->res->lastInsertId(); } //返回最后插入的id public function lastInsertId2(){ return $this->pdo->lastInsertId(); } /** * 参数说明 * string/array $table 数据库表,两种传值模式 * 普通模式: * "tb_member, tb_money" * 数组模式: * array("tb_member", "tb_money") * string/array $fields 需要查询的数据库字段,允许为空,默认为查找全部,两种传值模式 * 普通模式: * "username, password" * 数组模式: * array("username", "password") * string/array $sqlwhere 查询条件,允许为空,两种传值模式 * 普通模式(必须加上and,$sqlwhere为空 1=1 正常查询): * "and type = 1 and username like "%os%"" * 数组模式: * array("type = 1", "username like "%os%"") * string $orderby 排序,默认为id倒序 *int $debug 是否开启调试,开启则输出sql语句 * 0 不开启 * 1 开启 * 2 开启并终止程序 * int $mode 返回类型 * 0 返回多条记录 * 1 返回单条记录 * 2 返回行数 */ public function select($table, $fields="*", $sqlwhere="", $orderby="", $debug=0, $mode=0){ //参数处理 if(is_array($table)){ $table = implode(", ", $table); } if(is_array($fields)){ $fields = implode(",",$fields); /* if($this->Config["type"]=="oracle"){ //$fields = implode(",",$fields);//CUSTOMER_ID,FIRST_NAME,LAST_NAME,EMAIL //$fields = implode(","UTF8","ZHS16GBK") ,convert(",$fields); //$fields="convert(".$fields.","UTF8","ZHS16GBK")"; }else{ $fields = implode(",",$fields); } */ } if(is_array($sqlwhere)){ $sqlwhere = " and ".implode(" and ", $sqlwhere); } //数据库操作 if($debug === 0){ if($mode === 2){ //统计 $this->query("select count(*) from $table where 1=1 $sqlwhere"); $return = $this->fetchColumn(); }else if($mode === 1){ //返回一条 $this->query("select $fields from $table where 1=1 $sqlwhere $orderby"); $return = $this->fetch(); }else{ $this->query("select $fields from $table where 1=1 $sqlwhere $orderby"); $return = $this->fetchAll();//如果 $this->res为空即sql语句错误 会提示Call to a member function fetchAll() on a non-object } return $return; }else{ if($mode === 2){ echo "select count(*) from $table where 1=1 $sqlwhere"; }else if($mode === 1){ echo "select $fields from $table where 1=1 $sqlwhere $orderby"; }else{ echo "select $fields from $table where 1=1 $sqlwhere $orderby"; } if($debug === 2){ exit; } } } /** * 参数说明 * string/array $table 数据库表,两种传值模式 * 普通模式: * "tb_member, tb_money" * 数组模式: * array("tb_member", "tb_money") * string/array $set 需要插入的字段及内容,两种传值模式 * 普通模式: * "username = "test", type = 1, dt = now()" * 数组模式: * array("username = "test"", "type = 1", "dt = now()") * int $debug 是否开启调试,开启则输出sql语句 * 0 不开启 * 1 开启 * 2 开启并终止程序 * int $mode 返回类型 * 0 无返回信息 * 1 返回执行条目数 * 2 返回最后一次插入记录的id */ public function oic_insert($table, $set, $debug=0, $mode=0){ //参数处理 if(is_array($table)){ $table = implode(", ", $table); } if(is_array($set)){ $s="";$i=0; foreach($set as $k=>$v){ $i++; $s[$i]=$k;//,连接 $val[$i]=$v; } $sarr=implode(",",$s);//去掉最后一个, //array_pop($sarr); $set=implode("","",$val);////15221579236","张三","","2001","8","4","女","是 //$set = implode(", ", $set); } //数据库操作 if($debug === 0){ if($mode === 2){ $this->query("insert into $table ($sarr) values("".$set."")"); //$return = $this->lastInsertId(); }else if($mode === 1){ $this->exec("insert into $table ($sarr) values("".$set."")"); $return = $this->res; }else{ $this->query("insert into $table ($sarr) values("".$set."")"); $return = NULL; } return $return; }else{ echo "insert into $table ($sarr) values("".$set."")"; if($debug === 2){ exit; } } } public function insert($table, $set, $debug=0, $mode=0){ //参数处理 if(is_array($table)){ $table = implode(", ", $table); } if(is_array($set)){ $s=""; foreach($set as $k=>$v){ $s.=$k."="".$v."",";//,连接 } $sarr=explode(",",$s);//去掉最后一个, array_pop($sarr); $set=implode(",",$sarr); //$set = implode(", ", $set); } //数据库操作 if($debug === 0){ if($mode === 2){ $this->query("insert into $table set $set"); $return = $this->pdo->lastInsertId(); }else if($mode === 1){ $this->exec("insert into $table set $set"); $return = $this->res; }else{ $this->query("insert into $table set $set"); $return = NULL; } return $return; }else{ echo "insert into $table set $set"; if($debug === 2){ exit; } } } /** * 参数说明 * string $table 数据库表,两种传值模式 * 普通模式: * "tb_member, tb_money" * 数组模式: * array("tb_member", "tb_money") * string/array $set 需要更新的字段及内容,两种传值模式 * 普通模式: * "username = "test", type = 1, dt = now()" * 数组模式: * array("username = "test"", "type = 1", "dt = now()") * string/array $sqlwhere 修改条件,允许为空,两种传值模式 * 普通模式: * "and type = 1 and username like "%os%"" * 数组模式: * array("type = 1", "username like "%os%"") * int $debug 是否开启调试,开启则输出sql语句 * 0 不开启 * 1 开启 * 2 开启并终止程序 * int $mode 返回类型 * 0 无返回信息 * 1 返回执行条目数 */ public function update($table, $set, $sqlwhere="", $debug=0, $mode=0){ //参数处理 if(is_array($table)){ $table = implode(", ", $table); } if(is_array($set)){ $s=""; foreach($set as $k=>$v){ $s.=$k."="".$v."","; } $sarr=explode(",",$s);//去掉最后一个, array_pop($sarr); $set=implode(",",$sarr); //$set = implode(", ", $set); } if(is_array($sqlwhere)){ $sqlwhere = " and ".implode(" and ", $sqlwhere); } //数据库操作 if($debug === 0){ if($mode === 1){ $this->exec("update $table set $set where 1=1 $sqlwhere"); $return = $this->res; }else{ $this->query("update $table set $set where 1=1 $sqlwhere"); $return = true; } return $return; }else{ echo "update $table set $set where 1=1 $sqlwhere"; if($debug === 2){ exit; } } } /** * 参数说明 * string $table 数据库表 * string/array $sqlwhere 删除条件,允许为空,两种传值模式 * 普通模式: * "and type = 1 and username like "%os%"" * 数组模式: * array("type = 1", "username like "%os%"") * int $debug 是否开启调试,开启则输出sql语句 * 0 不开启 * 1 开启 * 2 开启并终止程序 * int $mode 返回类型 * 0 无返回信息 * 1 返回执行条目数 */ public function delete($table, $sqlwhere="", $debug=0, $mode=0){ //参数处理 if(is_array($sqlwhere)){ $sqlwhere = " and ".implode(" and ", $sqlwhere); //是字符串需自己加上and } //数据库操作 if($debug === 0){ if($mode === 1){ $this->exec("delete from $table where 1=1 $sqlwhere"); $return = $this->res; }else{ $this->query("delete from $table where 1=1 $sqlwhere"); $return = NULL; } return $return; }else{ echo "delete from $table where 1=1 $sqlwhere"; if($debug === 2){ exit; } } }}/*sqlserver 配置 extension=php_pdo_mssql.dll和extension=php_pdo_sqlsrv.dll 安装对应的 ntwdblib.dllhttp://msdn.microsoft.com/en-us/library/cc296170.aspx 下载php版本对应的sqlsrv扩展sqlserver 配置 odbc连接需开启extension=php_pdo_odbc.dll*/$mssql2008_config=array( "dsn"=>"odbc:Driver={SQL Server};Server=192.168.1.60;Database=his",//数据库服务器地址 "username"=>"sa", "password"=>"xxxxx",);$mssql=new Pdodb($mssql2008_config);$sql="select * from( select row_number()over(order by tempcolumn)temprownumber,* from ( select top 10 tempcolumn=0,a.* from DA_GR_HBFS a where 1=1 ) t) ttwhere temprownumber>0";$mssql->query($sql);while($res=$mssql->fetch()){ $data[]=$res;}print_r($data);exit;//mysql 操作$msyql_config=array( "dsn"=>"mysql:host=localhost;dbname=talk", "username"=>"root", "password"=>"123456");$mysql=new PDO_DB($msyql_config);$sql = "SELECT user_id, user_name, nickname FROM et_users ";$mysql->query($sql);$data=$mysql->fetchAll();print_r($data);exit;//oracle 操作$oci_config=array( "dsn"=>"oci:dbname=orcl", "username"=>"BAOCRM", "password"=>"BAOCRM");$oracle=new PDO_DB($oci_config);//print_r($oracle);exit;//PDO_DB Object ( [pdo:protected] => PDO Object ( ) [res:protected] => [config:protected] => [Config] => Array ( [dsn] => oci:dbname=orcl [name] => PWACRM [password] => PWACRM ) )$sql="select * from CUSTOMER_LEVEL t";$oracle->query($sql);$data=$oracle->fetchAll();print_r($data);exit;/*Array( [0] => Array ( [LEVEL_ID] => 1 [0] => 1 [LEVEL_NAME] => 普通会员 [1] => 普通会员 [LEVEL_DETAIL] => 普通会员 [2] => 普通会员 [SORT_NUMBER] => 15 [3] => 15 [CREATE_TIME] => 12-7月 -12 [4] => 12-7月 -12 [CREATE_BY] => 1 [5] => 1 [UPDATE_TIME] => 12-7月 -12 [6] => 12-7月 -12 [UPDATE_BY] => 1 [7] => 1 [STATE] => 正常 [8] => 正常 ))*/?>
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